Wall for refrigerator structures



(No Model.)

l A. J. CHASE.

WALL POR REPRIGERATOR STRUCTURES.

No. 318,870. y

Patented May 26, 1885.

UnuTno STaTns 5liiTnnT @Trice ANDREW J. cHAsn, or BosToN, MASSACHUSETTS.

WALL FOR REFRlGERATOR STRUCTURES.

' CATION forming part of Letters Patent No. 318,870, dated May 26, 1885.

Application filed Marehll, 1885. (Xo modill To cLZ whom it may concern;

Beit known that I, ANDREW J. Cruise, a citizen ofthe United States, residing at Boston, Massachusetts, have invented new and useful Improvements in W'alls for Refrigerator Structures, of which the following is a specification.

This invention has for its object to provide insulating or non-conducting walls for refrigcrater-buildings, refrigerator cars, and other analogous structures, which possess the requisites of being impermeable to heat or cold, are devoid of smell or odor, and are not liable to become a breeding place for vermin, and are, moreover, cheaper and superior to insulating or nonconducting walls heretofore devised.

The invention consists in the construction and combination of parts, which will be hereinafter more fully described, and then set forth in the claims.

In the drawings, Figure l is a vertical sectional view of an insulating or non-conducting wall for a refrigerator structure made ac cording to my invention. Fig. 2 is an elevation part-ly in section.

The reference numeral l designates the outer wall of a refrigerator structure, which may be a permanent building, a car, or a portable structure of any requireddimensions, shape, or capacity. This outer wall is made of vertical boards, which are secured to the outer side of a frame-work, usually made of upright joists or standards 2, and top and bottom beams or bars. To the inner side of this framework horizontal boards 3 are secured, so as to form a chamber between the two walls lthus formed, which is filled in with dry millshavings, cut straw, granulated cork, or other light and elastic non-conducting material, indicated in the drawings by the numeral 4L. Theinside boardiiig,3,is matched or connected by tonguc-andgroove joints, and should be as dry as possible. Upon this boarding is tacked or otherwise secured one or more thicknesses of a fabric composed of sheets of strong paper, 5, and an even layer of cottonwool, 6, which is interposed between the layers of paper, so that the latter become covers for said cotton. The sheets of paper and interposed cotton are hemined and quilted somewhat like an ordinary quilt, so as to hold the parts together and permit it to be transported and handled without being separated. This compound fabric is tacked upon the boarding 3, so as to form a complete jacket on all sides, and after this strips of wood or furring-pieces T are nailed through the fabric onto the boarding 3. These furring-pieces thus serveto hold the compound fabric in place, and they also form a base or foundation, upon which to nail the inside or finish sheathing, S. lt will be observed that this furrin g also forms an air-space between the sheathing` and the compound fabric.

lt has been found by actual demonstration that the peculiar combination of surfaces above described makes a superior wall of insulation against the conduct-ion of either heat or cold, and for this reason is admirably adapted for use in refrigerator or other 'analogous structures.

Hair felt has ordinarily been employed for lining or packing refrigerator-walls; but many objections exist to its use. First, it is expensive, next, it is of animal origin and frequently quite filthy, emitting strong odors, and it has been found to be a breeding-place for fleas and other vermin. My compound fabric of cotton and paper is a better nonconductor than hair felt, and, being free from odor and not liable to breed and attract vermin, its presence in a refrigerating structure is very desirable, since it is not liable to vitiate the air thereimand always remains pure and untainted.

Some other good fibrous lling of a vegetable or mineral nature may be substituted for cotton and held between the covering sheets of paper, and it is furthermore apparent that as inanylayers of the compound fabric may be used in the formation of the nonconducting walls as the requirements of the case demand.

Having thus described my invention, what I claim is l. A double wall for a refrigerator structure containing a packing or lining of a compound fabric made of sheets of paper and an interposed layer of cotton or vegetable ber, substantially as described.

2. A non-conducting wall for a refrigerator IOC) structure consisting of inner and outer boardl In testimony whereof I affix my signature ing, an intermediate space filled with a dry l in presence of two Witnesses.

non-conducting substance, a compound fabric of paper and cotton secured to the inner boardl ing, furring-pieces secured over the compound fabric for holding it in place, and inner sheath Witnesses: ing secured to said furrng, substantially as WARREN A. CHASE, described. FISHER AMES.

ANDREW J. CHASE; 

